Improvement in sleigh-knees



F. LARSON & P/D. LIVERMORE Sleigh-Knee.

No. 2 03,470 Patented May 7,137

FNVENTORS 66M 'WIT ATTORNEY UNITED STATES PATENT OEEIoE.

FRANK LARSON AND FREDERICK D.

LIvERMoRE, or RooHEsTER, MINN.

IMPROVEMENT lN SLElGH-KNEES.

Specification forming part of Letters Patent No. 203,470, dated May 7,1878; application filed A January 19, 1878.

To all whom it may concern;

Be it known that we, FRANK LARsoN and FREDERICK D. LrvERMoRE, ofRochester, in the county of Olmsted and State of Minnesota, haveinvented a new and valuable Improvement in Sleigh-Knees; and we dohereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawings, making a part of this specification,and to the letters and figures of reference marked thereon.

V Figure 1 of the drawings is arepresentation of a perspective View ofour improved sleighknee. Figs. 2 and 3 are longitudinal sectionsthereof, and Fig. 4 is a cross-sectional view thereof.

This invention has relation to improvements incast-metal sleigh-knees;and the nature of the invention consists in a cast-iron sleighknee, castaround a tubular wrought-iron core for the passage of a through-bolt, aswill be hereinafter more fully shown and described.

In the annexed drawings, the letter A designates a cast-iron sleighknee, having a wrought-iron core, a. This core, being tubular, is placedin a mold, and the metal cast around it, thereby forming a strong andreliable knee.

The knee will have the bearings a. for the rave and runner, the saidbearings being at right angles to the length of the knee and in planesat right angles to each other. The core a being tubular, as shown in thedrawings, its bore will serve as a passage for the bolt which connectsthe rave and runner.

It is evident that the strength of the knee is greatly increased by thiscombination in its structure of cast and wrought iron, and that itsstrength is independent of the bolt passed through it, and that the kneeitself may be cast lighter than hitherto required, so as to have aneater and more graceful appearance.

What I claim as new, and desire to secure by Letters Patent, is

A cast-iron sleigh-knee having a tubular wrought-iron core for thepassage of a through-bolt, substantially as specified.

In testimony that we claim the above we have hereunto subscribed ournames in the presence of two witnesses.

FRANK LARSON. F. 1). LIvERMoR Witnesses:

S, W. EATON, FRANK M. CORNELL.

